Technology

How a boxcooler works

The heat source cooling water is circulated through the boxcooler tube bundle, which is suspended in the sea chest. Heat is transferred from the boxcooler tubes to the seawater, causing it to rise due to its lower density creating a natural upward circulation. Openings in the bottom and upper side of the sea chest help to direct and focus the natural convection flow of seawater through the sea chest and across the boxcooler tubes. Additional cooling efficiency can be realized through forced circulation induced by the motion of the vessel.

Advantages:

  • Eliminates raw water pumps, strainers, and filters
  • Virtually maintenance free
  • Cools engines up to 10,000 kw
  • In-hull protection


Boxcooler

The position of the inlet and outlet slots direct the natural flow of seawater through the sea chest and across the boxcooler tubes.